Home GPU Comparison AMD Radeon R9 390X vs NVIDIA GeForce RTX 3090

AMD Radeon R9 390X vs NVIDIA GeForce RTX 3090

We compared two Desktop platform GPUs: 8GB VRAM Radeon R9 390X and 24GB VRAM GeForce RTX 3090 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 390X 's Advantages
Lower TDP (275W vs 350W)
NVIDIA GeForce RTX 3090 's Advantages
Released 5 years and 3 months late
Boost Clock1695MHz
More VRAM (24GB vs 8GB)
Larger VRAM bandwidth (936.2GB/s vs 384.0GB/s)
7680 additional rendering cores

Score

Benchmark

FP32 (float)
Radeon R9 390X
5.914 TFLOPS
GeForce RTX 3090 +501%
35.58 TFLOPS
3DMark Time Spy
Radeon R9 390X
4245
GeForce RTX 3090 +369%
19948
VS

Graphics Card

Jun 2015
Release Date
Sep 2020
Pirate Islands
Generation
GeForce 30
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 4.0 x16

Clock Speeds

-
Base Clock
1395 MHz
-
Boost Clock
1695 MHz
1500 MHz
Memory Clock
1219 MHz

Memory

8GB
Memory Size
24GB
GDDR5
Memory Type
GDDR6X
512bit
Memory Bus
384bit
384.0GB/s
Bandwidth
936.2GB/s

Render Config

44
Compute Units
-
-
SM Count
82
2816
Shading Units
10496
176
TMUs
328
64
ROPs
112
-
Tensor Cores
328
-
RT Cores
82
16 KB (per CU)
L1 Cache
128 KB (per SM)
1024 KB
L2 Cache
6 MB
-
-
-

Theoretical Performance

67.20 GPixel/s
Pixel Rate
189.8 GPixel/s
184.8 GTexel/s
Texture Rate
556.0 GTexel/s
-
FP16 (half)
35.58 TFLOPS
5.914 TFLOPS
FP32 (float)
35.58 TFLOPS
739.2 GFLOPS
FP64 (double)
556.0 GFLOPS

Board Design

275W
TDP
350W
600 W
Suggested PSU
750 W
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
1x HDMI 2.1 3x DisplayPort 1.4a
1x 6-pin + 1x 8-pin
Power Connectors
1x 12-pin

Graphics Processor

Grenada
GPU Name
GA102
Grenada XT (215-0880004)
GPU Variant
GA102-300-A1
GCN 2.0
Architecture
Ampere
TSMC
Foundry
Samsung
28 nm
Process Size
8 nm
6.2 billion
Transistors
28.3 billion
438 mm²
Die Size
628 mm²

Graphics Features

12 (12_0)
DirectX
12 Ultimate (12_2)
4.6
OpenGL
4.6
2.0
OpenCL
3.0
1.2
Vulkan
1.3
-
CUDA
8.6
6.3
Shader Model
6.6

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